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首页> 外文期刊>Nuclear Physics, A: Journal Devoted to the Experimental Study of the Fundamental Constituents of Matter and Their Actions >TOTAL GAMOW-TELLER STRENGTH, GROUND-STATE CORRELATIONS AND SUM RULES IN QRPA WITH NEUTRON-PROTON PAIRING
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TOTAL GAMOW-TELLER STRENGTH, GROUND-STATE CORRELATIONS AND SUM RULES IN QRPA WITH NEUTRON-PROTON PAIRING

机译：QRPA中子质子配对的总Gamow-话语强度，基态相关性和和规则

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摘要

The sum of the Gamow-Teller (GT) strength in 1p0f shell nuclei is investigated by the Quasi-particle Random Phase Approximation (QRPA), where BCS and RPA ground-state correlations are included with proton-proton and neutron-neutron but in addition also with neutron-proton (np) pairing correlations. Two sums of GT strength with and without closure for the intermediate excited states are derived including different approaches for the ground-state correlations. The sum of the GT strength is compared to the available experimental data and other theoretical calculations. The total GT strength in the usual BCS scheme is reduced by additional neutron-proton (np) pairing correlations. The usual RPA ground-state correlations reduce the total GT strength estimated from the BCS approximation while RPA with np pairing correlations yields an appreciably smaller reduction. Finally, ground-state correlations beyond RPA are also shown to reduce the total GT strength. [References: 45]
机译：通过准粒子随机相位近似（QRPA）研究了1p0f壳核中Gamow-Teller（GT）强度的总和，其中质子-质子和中子-中子包括BCS和RPA基态相关性，但除此之外也与中子-质子（np）配对相关。得出了具有和不具有针对中间激发态的闭合的GT强度的两个总和，包括用于基态相关的不同方法。 GT强度的总和与可用的实验数据和其他理论计算进行比较。常规BCS方案中的总GT强度会因其他中子-质子（np）配对相关性而降低。通常的RPA基态相关会降低根据BCS近似估算的总GT强度，而具有np配对相关的RPA会产生较小的降低。最后，还显示了超出RPA的基态相关性会降低总的GT强度。 [参考：45]

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